Not sure if I am answering your question because I am reading it as the smallest possible amount for 1/a +1/b.


The way to solve this is by picking the smallest numbers you can choose, which are -5 and 1.


It would solve as 1/-5 + 1/1= 1-1/5


The final answer would be 4/5.


Hopefully this helps.

 Dec 4, 2020

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